JPH0424916Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a top chain type exhaust chain extending from near the end of the feed chain to the rear of the handling barrel suspended horizontally in the handling room, and The present invention relates to a power transmission structure for a threshing device in which a drive transmission mechanism interlocked with the handling cylinder is operatively connected to a driven transmission mechanism interlocked with a sprocket on the starting end side of a waste straw chain.

[Conventional technology]

In the case of a threshing device having this type of transmission structure, for example, as shown in Japanese Utility Model Application Publication No. 58-24157,
Generally, the driving force of the exhaust wall chain is transmitted from a rotating shaft on the handling cylinder side via a belt, a bevel gear, or the like.

[Problem that the invention attempts to solve]

For this reason, the power transmission structure around the handling cylinder is complex, and when it is necessary to remove the handling cylinder to clean the handling chamber, not only is the power transmission mechanism that drives the handling cylinder mechanically separated, but also the power is transferred to the exhaust straw chain. It is also necessary to mechanically separate the drive transmission mechanism that is transmitting the data, resulting in a troublesome work.

Therefore, in recent years, in order to make it easier to clean the inside of the handling chamber, the handling cylinder has been positioned on the side of the grain culm tip and can be swung upwards and opened around a fulcrum parallel to the rotation axis of the handling cylinder. Moreover, by making the swinging release not accompanied by mechanical separation of the transmission mechanism that drives the handling cylinder, it is possible to simplify the troublesome mechanical separation of the transmission mechanism, and at the same time, it is possible to simplify the inside of the handling room. A device that can be opened wide has been proposed (Utokai 59th year).
-651 Publication).

However, in the above-mentioned threshing device, in order to eliminate the need for mechanical separation of the transmission mechanism to the ejecting straw chain, the transmission shaft installed at the opening swing axis of the handling cylinder is extended rearward and ejected. The structure is such that the power is transmitted to the end of the threshing chain, and it is difficult to implement this structure in which the exhausting threshing chain protrudes rearward from the threshing device.

The present invention focuses on this situation and aims to make it easier to open the interior of the handling room.

[Means for solving problems]

The characteristic configuration of the present invention, which has been made to achieve the above object, is that the handling cylinder is pivotally supported on a support frame, the drive transmission mechanism is supported on the support frame, and these are located on the grain culm tip side, and It is configured to be able to swing upwardly and open about a fulcrum that is parallel to the rotational axis of the handling barrel, and includes a vertical axis transmission member provided in the drive transmission mechanism and a vertical axis transmission member provided in the driven transmission mechanism. Constructed to allow occlusion and release from the vertical direction,
It is constructed so that the occlusion is released as the handling barrel is swung upward, and its functions and effects are as follows.

[Effect]

In other words, when the support frame is swung upwards around a fulcrum on the side of the grain tip that is being conveyed to the feed chain, a drive transmission mechanism that transmits power to the handling cylinder and the straw removal chain that are pivotally supported by the support frame. At the same time, the vertical axis transmission member on the drive transmission mechanism side moves vertically upward, and the engagement with the vertical axis transmission member on the driven transmission mechanism side is naturally released, and the handling room is opened. will be released.

Furthermore, when the support frame is pivoted downward from the open state of the handling chamber, the handling barrel and the drive transmission mechanism are also pivoted together, and at the same time, the vertical axis transmission member on the drive transmission mechanism side is vertically moved downward, and the driven transmission is It naturally engages with the vertical axis transmission member on the mechanism side, and the handling barrel is housed in a predetermined position in the handling chamber, and power can be transmitted to the exhaust chain.

[Effect of idea]

Therefore, according to the present invention, the handling cylinder can be swung upwardly and opened without requiring any effort to mechanically separate the drive transmission mechanism and the driven transmission mechanism, so maintenance, inspection and cleaning of the handling chamber can be easily performed. In addition, since the power is transmitted to the straw removal chain at the starting end of the chain, the removal straw chain can be extended to the rear at will, which is convenient for modern threshing equipment in which a waste straw processing device is often connected to the rear of the threshing equipment. It is.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in Figure 4, threshing feed chain 1
The harvested grain culm supplied to the handling room 2 by the threshing machine is wound around a large-diameter drive pulley 3a and a small-diameter idle pulley 3b that rotate around the axis _P1 along the grain culm conveyance direction. The lower part of the handling belt 4, especially the handling tooth 4a
The threshing straw is handled by the winding part of the driving pulley 3a having a high circumferential speed, filtered and sorted by the crimp net 5, and the threshed waste straw is carried out from the handling room 2 by the feed chain 1. A threshing department is constructed. As shown in Fig. 3, there is a swing-driven sorting device 6 for the processed material supplied from the handling room 2, a winnower 7 that supplies sorting air in the direction of the threshing culm transfer, and a dust winch 7 that sucks and sorts dust and discharges it outside the machine. A sorting section equipped with a rotating fan 8 and the like is installed below the handling room 2, and a first screw conveyor 9 carries out the first processing material from the sorting section to the outside of the machine, and a second processing section from the sorting section A second screw conveyor 10 for returning the material to the handling chamber 2 is provided at the bottom of the sorting section.

Further, at the rear of the handling room 2, there is provided a top chain-type waste straw chain 11 for conveying the threshed waste straw at an angle from near the end of the feed chain 1 to a waste straw binding device (not shown). A threshing device is constructed.

As shown in FIG. 5, both the pulleys 3a and 3b
is supported by a pair of support frames 12, 12, and the support frame 12 is fixed to a case 13 that covers the upper half of the handling chamber 2.
The lower end of the grain tip side is pivoted to the machine body side, and a fulcrum
It is configured to be able to swing upwardly and open together with the case 13 around the center. Note that the idle pulley 3b is pivotally supported by the support frames 12, 12 so as to be movable and adjustable in the lateral direction.

The front end of the shaft 14a of the driving pulley 3a passes through the case 13 forwardly, and the shaft portion protruding forward is interlocked with the shaft 15a on the input pulley 15 side by a bevel gear, and the rear end passes through the partition wall 13a of the case 13. The shaft portion is coupled with a belt to a drive transmission mechanism A provided on the feed chain 1 side. This drive transmission mechanism A has a transmission chamber 2a at the rear of the case 13.
The rotary power obtained from the shaft 14a of the drive pulley 3a can be transmitted to a driven transmission mechanism B which is fixed inside the exhaust chain 11 and is interlocked and connected to the sprocket 16 on the starting end side of the exhaust chain 11.

More specifically, as shown in FIG. 2, power is transmitted between a pulley 17 that is pivotally supported on the feed chain 1 side of the transmission chamber 2a and an output pulley 18 that is fitted to the rear end of the shaft 14a of the drive pulley 3a. While winding the belt 18a, the pulley 1 on the feed chain 1 side
By fitting and fixing the shaft 17a of No. 7 into a worm gear 19 installed in the drive transmission mechanism A, and engaging the worm gear 19 with the gear 20 in the drive transmission mechanism A, rotational power around the horizontal axis can be generated. It is designed so that it can be exchanged for rotational power around the vertical axis.
The gear 20 is an example of a vertical axis transmission member, and has a spline hole 20a formed in the boss portion.

As shown in FIG. 1, the driven transmission mechanism B includes a spline shaft 21, which is an example of a vertically axial transmission member that can be spline-fitted into the spline hole 20a from below, and a spline shaft 21 that transmits the power obtained from the spline shaft 21 laterally. Exhaust straw chain 1 by converting it into rotational power around the axis
It is configured to include a bevel gear 22 that transmits power to the shaft 16a of the sprocket 16 on the first end side, and is fixed to the machine body.

As described above, in the present invention, by simply swinging the handling belt 4, drive transmission mechanism A, etc. upward around the fulcrum Since the drive transmission mechanism A and the driven transmission mechanism B are mechanically separated by engaging and disengaging from the shaft 21, the handling chamber 2 can be opened easily.

As shown in Fig. 6, the present invention is applied to a threshing machine equipped with a type of handling cylinder in which the drive pulley 3a has a larger diameter than the driven pulley 3b, or a threshing machine equipped with a drum-shaped handling cylinder. Of course, you may do so.

Although numbers are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the power transmission structure of the threshing device according to the present invention, and FIG. 1 is a vertical sectional side view of the main part, and FIG.
The figure is a longitudinal sectional plan view of the main parts, Fig. 3 is a longitudinal sectional side view of the threshing device, Fig. 4 is a longitudinal sectional plan view of the inside of the handling room, Fig. 5 is a longitudinal sectional side view of the inside of the handling room, and Fig. 6 is a separate implementation. It is a vertical side view showing the inside of an example handling room. 1...Feed chain, 2...Handling room, 4...
Handling cylinder, 11... Discharge chain, 12... Support frame, 16... Sprocket, 20, 21...
Vertical axis transmission member, A... Drive transmission mechanism, B... Followed transmission mechanism, X... Fulcrum.

Claims (1)

[Scope of Claim for Utility Model Registration] At the rear of the handling cylinder 4 suspended horizontally in the handling room 2, an upstream chain-type waste straw chain 11 extending from near the end of the feed chain 1 to the rear is provided, and the handling cylinder 4 is The drive transmission mechanism A interlocked with the starting end sprocket 16 of the exhaust chain 11
A power transmission structure for a thresher that is interlocked and connected to a driven transmission mechanism B that is interlocked with a driven transmission mechanism B, in which the handling cylinder 4 is pivotally supported on a support frame 12, and the support frame 12 further supports a drive transmission mechanism A; They are located on the side of the grain culm tip and are configured to be swingable and openable upwards about a fulcrum X parallel to the rotational axis of the handling barrel 4, and a longitudinal axis transmission provided in the drive transmission mechanism A. The member 20 and the vertical axis transmission member 21 provided in the driven transmission mechanism B are configured to be able to engage and disengage freely from the vertical direction, and are configured to be disengaged as the handling barrel 4 swings upward. Power transmission structure of a threshing device. A power transmission structure for a threshing device according to claim 1, wherein the trunk handling 4 is of a belt type. The power transmission structure for a threshing device as claimed in claim 1 or 2, wherein the vertical axis transmission members 20 and 21 are gears having a spline shaft and a spline hole.